Nolet, B. A. (1994). Return of the beaver to the Netherlands: Viability and prospects of a re-introduced population. Rijksuniversiteit te Groningen.
Chicago-referens (17:e uppl.)Nolet, Bartholomeus Andreas. Return of the Beaver to the Netherlands: Viability and Prospects of a Re-introduced Population. Netherlands: Rijksuniversiteit te Groningen, 1994.
MLA-referens (8:e uppl.)Nolet, Bartholomeus Andreas. Return of the Beaver to the Netherlands: Viability and Prospects of a Re-introduced Population. Rijksuniversiteit te Groningen, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.